本文整理汇总了C++中DataWriter::inHeader方法的典型用法代码示例。如果您正苦于以下问题：C++ DataWriter::inHeader方法的具体用法？C++ DataWriter::inHeader怎么用？C++ DataWriter::inHeader使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DataWriter的用法示例。
在下文中一共展示了DataWriter::inHeader方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: while
bool
SimpleReadWriter::writeHeader(
const ReaderContext& context,
bool sorted,
int argc,
const char **argv,
const char *version,
const char *rgLine,
bool omitSQLines)
{
char* buffer;
size_t size;
size_t used;
char *localBuffer = NULL;
writer->inHeader(true);
if (! writer->getBuffer(&buffer, &size)) {
return false;
}
char *writerBuffer = buffer;
size_t writerBufferSize = size;
while (!format->writeHeader(context, buffer, size, &used, sorted, argc, argv, version, rgLine, omitSQLines)) {
delete[] localBuffer;
size = 2 * size;
localBuffer = new char[size];
buffer = localBuffer;
}
if (NULL == localBuffer) {
_ASSERT(writerBuffer == buffer);
writer->advance((unsigned)used, 0);
writer->nextBatch();
} else {
size_t bytesRemainingToWrite = used;
size_t bytesWritten = 0;
while (bytesRemainingToWrite > 0) {
size_t bytesToWrite = __min(bytesRemainingToWrite, writerBufferSize);
memcpy(writerBuffer, localBuffer + bytesWritten, bytesToWrite);
writer->advance(bytesToWrite);
writer->nextBatch();
if (!writer->getBuffer(&writerBuffer, &writerBufferSize)) {
return false;
}
bytesWritten += bytesToWrite;
bytesRemainingToWrite -= bytesToWrite;
}
delete[] localBuffer;
}
writer->inHeader(false);
return true;
}